// code_047_Timer project main.gopackage mainimport ( "fmt" "time")func main() { timer1 := time.NewTimer(time.Second * 2) t1 := time.Now() fmt.Printf("t1:%v\n", t1) t2 := <-timer1.C fmt.Printf("t2:%v\n", t2) //如果只是想单纯的等待的话，可以使用 time.Sleep 来实现 timer2 := time.NewTimer(time.Second * 2) <-timer2.C fmt.Println("2s后") time.Sleep(time.Second * 2) fmt.Println("再一次2s后") <-time.After(time.Second * 2) //time.After函数的返回值是chan Time fmt.Println("再再一次2s后") timer3 := time.NewTimer(time.Second) go func() { <-timer3.C fmt.Println("Timer 3 expired") }() stop := timer3.Stop() //停止定时器 ////阻止timer事件发生，当该函数执行后，timer计时器停止，相应的事件不再执行 if stop { fmt.Println("Timer 3 stopped") } fmt.Println("before") timer4 := time.NewTimer(time.Second * 5) //原来设置5s timer4.Reset(time.Second * 1) //重新设置时间,即修改NewTimer的时间 <-timer4.C fmt.Println("after")}